買64G SDXC記憶卡要在電腦上格式化的請先把這篇看一下，就不會搞錯了

拿不支援SDXC的讀卡機到電腦去format，就已違反了規範了
是機器的標準可向下相容
記憶卡並無法向下相容的啊
這應該很容易理解的

沒有win7的
也不用去下載較複雜的partition 工具軟體
官網直接有提供格式化程式
SD Formatter 4.0


原文：https://www.sdcard.org/consumers/sdxc_capabilities/using_sdxc/

Understanding Backwards Compatibility
SDXC memory cards must only with SDXC devices.
SDXC devices can use SD, SDHC and SDXC memory cards.
SDHC memory cards can be used with SDHC and SDXC devices.
SDHC devices can use both SD and SDHC memory cards.
SD devices can only use SD memory cards.


Only Use SDXC Memory Cards in SDXC Devices
SDXC devices are backwards compatible, so they accept SD and SDHC memory cards. SDXC memory cards must only be used with SDXC devices and should never be used in non-compatible devices. If you need to format an SDXC memory card, you can typically format it by using your SDXC device or by using the SD Formatter 4.0 with your computer.

If an SDXC memory card is inserted into a computer or device that does not support the SDXC standard, a message may prompt you to format the card. Do not format the SDXC memory card in a non-compatible device because it will erase the data on the SDXC memory card and format the card for a different file system, making it incompatible with SDXC devices.




If you accidentally insert your SDXC card into a computer that does not support SDXC (using a direct SD slot or USB reader/writer), the following messages may appear: